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Date: Mon, 26 Feb 2024 19:54:25 +0200
From: Andy Shevchenko <andy@kernel.org>
To: Thomas Richard <thomas.richard@bootlin.com>
Cc: Linus Walleij <linus.walleij@linaro.org>,
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	Tony Lindgren <tony@atomide.com>,
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Subject: Re: [PATCH v3 17/18] PCI: j721e: add reset GPIO to struct j721e_pcie
Message-ID: <ZdzQUX14SCrK95q2@smile.fi.intel.com>
References: <20240102-j7200-pcie-s2r-v3-0-5c2e4a3fac1f@bootlin.com>
 <20240102-j7200-pcie-s2r-v3-17-5c2e4a3fac1f@bootlin.com>
 <Zc42HIibtoXqLyEA@smile.fi.intel.com>
 <e24c77e6-5fcd-42f0-b93c-b4e6ce17e75a@bootlin.com>
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Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo

On Mon, Feb 26, 2024 at 06:05:16PM +0100, Thomas Richard wrote:
> On 2/15/24 17:04, Andy Shevchenko wrote:
> > On Thu, Feb 15, 2024 at 04:18:02PM +0100, Thomas Richard wrote:
> >> From: Th?o Lebrun <theo.lebrun@bootlin.com>

..

> >>  	case PCI_MODE_RC:
> >> -		gpiod = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
> >> -		if (IS_ERR(gpiod)) {
> >> -			ret = PTR_ERR(gpiod);
> >> +		pcie->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
> >> +		if (IS_ERR(pcie->reset_gpio)) {
> >> +			ret = PTR_ERR(pcie->reset_gpio);
> >>  			if (ret != -EPROBE_DEFER)
> >>  				dev_err(dev, "Failed to get reset GPIO\n");
> >>  			goto err_get_sync;
> >> @@ -504,9 +504,9 @@ static int j721e_pcie_probe(struct platform_device *pdev)
> >>  		 * mode is selected while enabling the PHY. So deassert PERST#
> >>  		 * after 100 us.
> >>  		 */
> >> -		if (gpiod) {
> >> +		if (pcie->reset_gpio) {
> >>  			usleep_range(100, 200);
> >> -			gpiod_set_value_cansleep(gpiod, 1);
> >> +			gpiod_set_value_cansleep(pcie->reset_gpio, 1);
> >>  		}
> > 
> > Instead of all this, just add one line assignment. Moreover, before or after
> > this patch refactor the code to use ret = dev_err_probe(...); pattern that
> > eliminates those deferral probe checks.
> 
> Hi Andy,
> 
> I'm not sure what you exactly want when you write "just add one line
> assignment".

		pcie->reset_gpio = gpiod;

That's it. No additional code changes are needed (WRT the above context,
of course you want to have a new structure member).

-- 
With Best Regards,
Andy Shevchenko